The hardcoded EXPECTED_SKILLS and EXPECTED_AGENTS constants broke CI
on every PR that added or removed a command/agent, because the count
drifted from the source directories. Every open PR based on the old
count would fail until manually updated.
Now computed at test time by counting .md files in commands/gsd/ and
agents/ directories — the same source the installer reads from. Adding
a new command automatically updates the expected count.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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